The minority of the delegates at the Diet of Speyer who voted
against the decision to enforce the Edict of Worms now lodge a
protest against the decision of the Catholic majority. This
Lutheran group is led by the Elector John of Saxony, the Margrave
George of Brandenburg and Philip, Landgrave of Hesse, and also
includes the princes of Brunswick-Luneburg and Anhalt, Nuremberg,
Strasbourg and 12 other cities. This act gives rise to the term
'Protestant'.
Citation:
Editors. "A protest against the Diet's decisions creates the word 'Protestant'".
The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14416, accessed 20 May 2013.]